Revert "Remove specific doc references"

This reverts commit 31d1a8f.

Signed-off-by: Filipe Laíns <lains@riseup.net>

Author: FFY00

Doc/library/importlib.rst

@@ -278,8 +278,8 @@ ABC hierarchy::
    .. method:: discover(parent=None)
 
       An optional method which searches for possible specs with given *parent*
-      module spec. If *parent* is *None*, ``discover`` will search for top-level
-      modules.
+      module spec. If *parent* is *None*, :meth:`MetaPathFinder.discover` will
+      search for top-level modules.
 
       Returns an iterable of possible specs.
 
@@ -320,8 +320,8 @@ ABC hierarchy::
    .. method:: discover(parent=None)
 
       An optional method which searches for possible specs with given *parent*
-      module spec. If *parent* is *None*, ``discover`` will search for top-level
-      modules.
+      module spec. If *parent* is *None*, :meth:`PathEntryFinder.discover` will
+      search for top-level modules.
 
       Returns an iterable of possible specs.